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A003987 as a triangular array

0
11
202
3333
42024
551155
6460646
77777777
864606468
9955115599
108104202410810
11111111333311111111
121081012202121081012
131399

A003987 as a square array

012345678910111213
1032547698111013
23016745101189
3210765411109
4567012312
54761032
6745230
765432
89101112
981110
10118
1110
12

A003987 as an upper right triangle

012345678910111213
1032547698111013
23016745101189
3210765411109
4567012312
54761032
6745230
765432
89101112
981110
10118
1110
12

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Last modified July 27 15:49 EDT 2021. Contains 346308 sequences. (Running on oeis4.)